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Neko [114]
2 years ago
9

1. At the synaptic knob, voltage-gated ______________ channels open, thereby stimulating the synaptic vesicles to release their

neurotransmitters by exocytosis.
Biology
2 answers:
kupik [55]2 years ago
5 0

Answer:

calcium

Explanation:its the best choice

mart [117]2 years ago
4 0
The best answer choice is ‘ Calcium ‘ . I hope this helped !
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What type of tissue comprises the bulk of the myocardium
ycow [4]

Answer:

Cardiac muscle tissue

Explanation:

Myocardium or heart muscle is a special type of muscle (differ than striated and smooth) and it is the main tissue of the walls of the heart.

Heart muscle consists of individual heart muscle cells (cardiomyocytes) which are joined together by intercalated discs. It also contains  collagen fibres and other substances that form the extracellular matrix.

Heart muscle has a "special" mode of contraction: action potential triggers the release of calcium ions from the cell's internal store, the sarcoplasmic reticulum.

4 0
3 years ago
I don't know what this is I need help
Bas_tet [7]

to be honest me neither dude

4 0
2 years ago
3. What characteristic is shared by birds, salamanders, and sharks?
Ray Of Light [21]
Birds, Salamanders and Sharks are all Endotherms and can manipulate their body temperatures.
8 0
3 years ago
Because cell walls consist of a cross-linked network of long filaments embedded in a stiff surrounding material, they can be cal
Contact [7]

According to the research, the correct answer is fiber composites. Because cell walls consist of a cross-linked network of long filaments embedded in a stiff surrounding material, they can be called fiber composites.

<h3>What are cell walls?</h3>

It is a network that covers prokaryotic cells and plant cells that is located outside the plasma membrane, helping to form the structure.

In this sense, since it is made up of a network of carbohydrates, phospholipids and structural proteins, and the different cell types of plants can be identified by their characteristics, they can be called fiber composites.

Therefore, we can conclude that cell walls are a network embedded in a matrix composed of carbohydrates and proteins.

Learn more about cell walls here: brainly.com/question/965751

#SPJ1

8 0
1 year ago
If your ________ is destroyed, the left side of your brain could not control the movements of your right hand.
julsineya [31]

If your brainstem is destroyed, the left side of your brain could not control the movements of your right hand.

Brainstem- The brainstem is the region at the base of the brain that is located between the cervical spinal cord and the deep cerebral hemispheres. It plays a crucial role in controlling some involuntary bodily functions like breathing and heartbeat.

Spinal cord- A column of nerve fibers that extends from the skull base to the middle of the back. It has three thin membrane-like layers of protecting tissue covering it. The vertebrae encircle the spinal cord and its surrounding membranes (back bones).

To know more about the Brainstem, click on the below link,

brainly.com/question/5351789

#SPJ4

8 0
1 year ago
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